lfs/chapter08/pcre.xml

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  "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../general.ent">
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<sect1 id="ch-system-pcre2" role="wrap">
  <?dbhtml filename="pcre2.html"?>

  <sect1info condition="script">
    <productname>pcre2</productname>
    <productnumber>&pcre2-version;</productnumber>
    <address>&pcre2-url;</address>
  </sect1info>

  <title>Pcre2-&pcre2-version;</title>

  <indexterm zone="ch-system-pcre2">
    <primary sortas="a-Pcre2">Pcre2</primary>
  </indexterm>

  <sect2 role="package">
    <title/>

    <para>The pcre2 package contains a new generation of the Perl Compatible 
    Regular Expression libraries.</para>

    <segmentedlist>
      <segtitle>&buildtime;</segtitle>
      <segtitle>&diskspace;</segtitle>

      <seglistitem>
        <seg>&pcre2-fin-sbu;</seg>
        <seg>&pcre2-fin-du;</seg>
      </seglistitem>
    </segmentedlist>

  </sect2>

  <sect2 role="installation">
    <title>Installation of Pcre2</title>

    <para>Prepare pcre2 for compilation:</para>

<screen><userinput remap="configure">./configure --prefix=/usr                       \
            --docdir=/usr/share/doc/pcre2-&pcre2-version; \
            --enable-unicode                    \
            --enable-jit                        \
            --enable-pcre2-16                   \
            --enable-pcre2-32                   \
            --enable-pcre2grep-libz             \
            --enable-pcre2grep-libbz2           \
            --enable-pcre2test-libreadline      \
            --disable-static</userinput></screen>

    <variablelist>
      <title>The meaning of the new configure options:</title>

      <varlistentry>
        <term><parameter>--enable-unicode</parameter></term>
        <listitem>
          <para>
            This option enables Unicode support and includes the functions for
            handling UTF-8/16/32 character strings in the library. 
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><parameter>--enable-jit</parameter></term>
        <listitem>
          <para>
            This option enables Just-in-time compiling, which can greatly
            speed up pattern matching.  
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><parameter>--enable-pcre2-16</parameter></term>
        <listitem>
          <para>
            This option enables 16 bit character support. 
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><parameter>--enable-pcre2-32</parameter></term>
        <listitem>
          <para>
            This option enables 32 bit character support. 
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><parameter>--enable-pcre2grep-libz</parameter></term>
        <listitem>
          <para>
            This option adds support for reading .gz compressed files to pcre2grep.
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><parameter>--enable-pcre2grep-libbz2</parameter></term>
        <listitem>
          <para>
            This option adds support for reading .bz2 compressed files to pcre2grep.
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><parameter>--enable-pcre2test-libreadline</parameter></term>
        <listitem>
          <para>
            This option adds line editing and history features to the pcre2test program.
          </para>
        </listitem>
      </varlistentry>

    </variablelist>

    <para>Compile the package:</para>

<screen><userinput remap="make">make</userinput></screen>

    <para>To test the results, issue:</para>

<screen><userinput remap="test">make check</userinput></screen>

    <para>Install the package:</para>

<screen><userinput remap="install">make install</userinput></screen>

  </sect2>


  <sect2 id="contents-pcre2" role="content">
    <title>Contents of Pcre2</title>

    <segmentedlist>
      <segtitle>Installed programs</segtitle>
      <segtitle>Installed library</segtitle>

      <seglistitem>
        <seg>pcre2grep and pcre2test</seg>
        <seg>libpcre2-8.so, libpcre2-16.so, libpcre2-32.so, and libpcre2-posix.so</seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

      <varlistentry id="pcre2grep">
        <term><command>pcre2grep</command></term>
        <listitem>
          <para>is a version of grep that understands Perl compatible regular 
          expressions</para>
          <indexterm zone="ch-system-pcre2 pcre2grep">
            <primary sortas="b-pcre2grep">pcre2grep</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pcre2test">
        <term><command>pcre2test</command></term>
        <listitem>
          <para>can test a Perl compatible regular expression</para>
          <indexterm zone="ch-system-pcre2 pcre2test">
            <primary sortas="b-pcre2test">pcre2test</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>